DERIVATIVES - Additional Information (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Net interest income (expense)	$ 36,675,000	$ 36,515,000	$ 38,921,000	$ 43,978,000	$ 48,040,000	$ 45,525,000	$ 42,893,000	$ 39,622,000	$ 156,089,000	$ 176,080,000	$ 138,061,000
Accrued interest receivable	30,676,000				25,157,000				30,676,000	25,157,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	310,000,000				290,000,000				310,000,000	290,000,000
Net interest income (expense)									5,000,000	(851,000)
Unrealized after-tax gain of accumulated other comprehensive income (loss)					167,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivative [Line Items]
Notional amount	310,000,000				290,000,000				310,000,000	290,000,000
Loan Level Swaps [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	545,983,000				612,211,000				545,983,000	612,211,000
Loan Level Swaps [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivative [Line Items]
Accrued interest payable	1,100,000				1,100,000				1,100,000	1,100,000
Loan Level Swaps [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivative [Line Items]
Accrued interest receivable	$ 1,400,000				$ 1,400,000				$ 1,400,000	$ 1,400,000